Mercurial > urweb
view tests/recBad.ur @ 1394:d328983dc5a6
Allow subqueries to reference aggregate-only columns of free tables; treat non-COUNT aggregate functions as possibly returning NULL
author | Adam Chlipala <adam@chlipala.net> |
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date | Sat, 15 Jan 2011 14:53:13 -0500 |
parents | 71bafe66dbe1 |
children |
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datatype list a = Nil | Cons of a * list a fun append (t ::: Type) (ls1 : list t) (ls2 : list t) : list t = case ls1 of Nil => ls2 | Cons (h, t) => Cons (h, append t ls2) (*val rec ones : list int = Cons (1, ones)*) val rec ones = fn () => Cons (1, ones ())